ios - Swift 3 webview 触摸事件

Question

我试图在我的 swift 3 应用程序中包含一个 webview 触摸事件，但这样做仍然不成功。

我尝试通过谷歌搜索时发现的以下示例来使用 toucheBegan 和 touchesEnd 事件。有人可以通过 swift 3 的代码片段或链接吗

我正在尝试这种方式

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?){
    super.touchesBegan(touches, with: event)
}

但不工作。我不知道如何在其中集成webview。

Answer 1

为所有类型的 View 实现 UITapGestureRecognizer 将是一种变通解决方案。

override func viewDidLoad(){
    super.viewDidLoad() 
    let tapRecognizer = UITapGestureRecognizer(target: view, action: "handleSingleTap:")      
    tapRecognizer.numberOfTapsRequired = 1                 
    self.view.addGestureRecognizer(tapRecognizer)
} 

func handleSingleTap(recognizer: UITapGestureRecognizer) {
    //Do something here with the gesture 
} 

对于触摸开始和触摸结束尝试通过重写 native 方法使用该代码。

override func touchesBegan(touches: Set, withEvent event: UIEvent) {
super.touchesBegan(touches, withEvent: event) 
let touch: UITouch = touches.first as! UITouch
if (touch.view == yourView){ 
   println("touchesBegan | This is an ImageView") 
 }else{ 
   println("touchesBegan | This is not an ImageView") 
 } 
}

触摸端功能。

override func touchesEnded(touches: Set, withEvent event: UIEvent) { 
   super.touchesMoved(touches, withEvent: event) 
   let touch: UITouch = touches.first as! UITouch 

   if (touch.view == yourView){
      printing("touchesEnded | This is an ImageView")
    }
   else{ 
      println("touchesEnded | This is not an ImageView")
    } 
}